公开(公告)号：US20100086314A1

公开(公告)日：2010-04-08

申请号：US12562251

申请日：2009-09-18

Applicant: Jianjun Yu ,  Lei Xu ,  Dayou Qian ,  Ting Wang

Inventor： Jianjun Yu ,  Lei Xu ,  Dayou Qian ,  Ting Wang

IPC: H04B10/04

CPC classification number: H04B10/50

Abstract: An optical apparatus includes a quadrature phase shift keying modulator for generating a non-return-to-zero quadrature phase shift keyed NRZ-QPSK signal from a received lightwave, the modulator being driven by a radio frequency RF signal, an intensity modulator for carving the NRZ-QPSK signal to return-to-zero RZ pulses with a different duty cycle than that of the NRZ-QPSK, the intensity modulator being driven by a radio frequency RF clock signal to change the NRZ-QPSK to an RZ-QPSK signal, and an optical filter with a narrow band for filtering the signal from the intensity modulator to increase optical power that is useable by an optical digital coherent detection system.

Abstract translation: 光学装置包括：正交相移键控调制器，用于从接收到的光波产生不归零正交相移键控的NRZ-QPSK信号，调制器由射频RF信号驱动;强度调制器，用于雕刻 NRZ-QPSK信号以与NRZ-QPSK的占空比不同的占空比的归零RZ脉冲，强度调制器由射频RF时钟信号驱动，以将NRZ-QPSK改变为RZ-QPSK信号， 以及具有窄带的滤光器，用于对来自强度调制器的信号进行滤波，以增加可由光学数字相干检测系统使用的光功率。

公开(公告)号：US20090290878A1

公开(公告)日：2009-11-26

申请号：US12125507

申请日：2008-05-22

Applicant: Jianjun Yu ,  Ting Wang

Inventor： Jianjun Yu ,  Ting Wang

IPC: H04J14/00 ,  H04J11/00

CPC classification number: H04L27/2627 ,  H04B10/505 ,  H04B10/5165 ,  H04B10/548 ,  H04L27/2697

Abstract: A method for generating an optical OFDM signal with reduced optical signal to nose ratio requirement includes separating an up-converted OFDM signal into a first part and a second part out of phase with the first part; driving a modulator with the first and second parts of the of the up-converted OFDM signal; and varying a lightwave with the modulator for generating a carrier suppressed OFDM signal having improved receiver sensitivity.

Abstract translation: 一种用于产生具有降低的光信噪比要求的光OFDM信号的方法，包括将上转换的OFDM信号分离成与第一部分异相的第一部分和第二部分; 用上变频OFDM信号的第一和第二部分驱动调制器; 以及用所述调制器改变光波以产生具有改善的接收机灵敏度的载波抑制OFDM信号。

公开(公告)号：US20090274462A1

公开(公告)日：2009-11-05

申请号：US12235013

申请日：2008-09-22

Applicant: Jianjun Yu

Inventor： Jianjun Yu

IPC: H04J14/00

CPC classification number: H04J14/0226 ,  H04B10/2587 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J2014/0253 ,  H04L27/2601

Abstract: An optical system and method includes a source-free optical network unit coupled to an optical fiber for receiving a centralized lightwave carrier signal with downstream data over the optical fiber. The optical network unit includes a coupler configured to split the original carrier signal into a first path and a second path. The first path includes an optical filter configured to reduce fading effects of the carrier signal. The second path includes a modulator configured to remodulate the centralized lightwave carrier signal with upstream data to produce an upstream data signal for upstream transmission.

Abstract translation: 光学系统和方法包括耦合到光纤的无源光网络单元，用于接收具有光纤上的下行数据的集中式光波载波信号。 光网络单元包括被配置为将原始载波信号分割为第一路径和第二路径的耦合器。 第一路径包括被配置为减少载波信号的衰落影响的滤光器。 第二路径包括配置成用上行数据重新调制集中式光波载波信号以产生用于上行传输的上行数据信号的调制器。

公开(公告)号：US07068936B2

公开(公告)日：2006-06-27

申请号：US10161335

申请日：2002-06-03

Applicant: Stanley Pau ,  Jianjun Yu ,  Keisuke Kojima ,  Naresh Chand

Inventor： Stanley Pau ,  Jianjun Yu ,  Keisuke Kojima ,  Naresh Chand

IPC: H04J14/00

CPC classification number: H04J14/086 ,  H04J14/02 ,  H04J14/08 ,  H04Q11/0005 ,  H04Q2011/0011 ,  H04Q2011/0016 ,  H04Q2011/002 ,  H04Q2011/0024 ,  H04Q2011/0033 ,  H04Q2011/0045

Abstract: Methods and apparatus for providing a time slot switch which performs switching in the optical domain without the need for O-E-O conversion is described. The time slot switching device of the present invention may be part of a large switching device capable of performing switching and other function on WDM, TDM and WDM signals which are time division multiplexed. An optical time slot switch implemented using a time slot demultiplexer, optical cross-connect, variable delay lines and time slot multiplexer are described. Frequency conversion may be performed on a per time slot basis in cases where time slot signals are switched between lines using different wavelengths. Wave division demultiplexers and multiplexers can be added to the basic time slot switch to provide support for WDM switching and switching of TDM signals which are transmitted using wave division multiplexing.

Abstract translation: 描述了提供在光域中进行切换而不需要O-E-O转换的时隙切换的方法和装置。 本发明的时隙切换装置可以是对时分复用的WDM，TDM和WDM信号进行切换等功能的大型交换装置的一部分。 描述了使用时隙解复用器，光交叉连接，可变延迟线和时隙多路复用器实现的光时隙交换机。 在使用不同波长的线路之间切换时隙信号的情况下，可以在每个时隙的基础上执行频率转换。 波分复用器和多路复用器可以添加到基本时隙交换机中，以支持使用波分复用传输的TDM信号的WDM交换和交换。

公开(公告)号：US10033467B2

公开(公告)日：2018-07-24

申请号：US14113012

申请日：2012-04-25

Applicant: Hung-Chang Chien ,  Jianjun Yu

Inventor： Hung-Chang Chien ,  Jianjun Yu

IPC: H04B10/04 ,  H04B10/548

Abstract: A method and apparatus for generating sub-carriers is disclosed. Coherent optical sub-carriers with sub-carrier spacing are generated for carrying an orthogonal frequency division multiplexed (OFDM) signal. Multiple peaks are generated by cascading multiple phase modulators driven by different radio frequency sources.

公开(公告)号：US08781325B2

公开(公告)日：2014-07-15

申请号：US13407017

申请日：2012-02-28

Applicant: Jianjun Yu

Inventor： Jianjun Yu

IPC: H04J14/00 ,  H04J4/00 ,  H04B10/04 ,  H04B10/12 ,  H04L27/26 ,  H04L27/20 ,  H04B10/50 ,  H04B10/548

CPC classification number: H04L27/2096 ,  H04B10/5051 ,  H04B10/548 ,  H04L27/2637 ,  H04L27/2697

Abstract: A method of generating a multi-subcarrier optical signal is disclosed. A local oscillator oscillates one or more data signals to generate one or more oscillating data signals. A series of modulators phase modulate a lightwave to generate a phase modulated lightwave, wherein the series of modulators are driven by the one or more oscillating data signals. The intensity modulator modulates the phase modulated lightwave, the intensity modulator being driven by one of the oscillating data signals, to generate the multi-subcarrier optical signal.

Abstract translation: 公开了一种产生多子载波光信号的方法。 本地振荡器振荡一个或多个数据信号以产生一个或多个振荡数据信号。 一系列调制器相位调制光波以产生相位调制光波，其中该系列调制器由一个或多个振荡数据信号驱动。 强度调制器调制相位调制光波，强度调制器由振荡数据信号之一驱动，以产生多子载波光信号。

公开(公告)号：US08135287B2

公开(公告)日：2012-03-13

申请号：US12183381

申请日：2008-07-31

Applicant: Jianjun Yu ,  Ting Wang

Inventor： Jianjun Yu ,  Ting Wang

IPC: H04B10/04 ,  H04B10/12

CPC classification number: H04J14/06 ,  H04B10/5165 ,  H04B10/532 ,  H04B10/548 ,  H04J14/002 ,  H04L5/0014 ,  H04L27/2627 ,  H04L27/2697

Abstract: A method includes modulating lightwaves to provide first and second OFDM signal sidebands at a first polarization direction and first and second OFDM signal sidebands at a second polarization direction, and combining sidebands that are oppositely positioned and joined from the first and second OFDM signal sidebands at each polarization direction to provide a polarization multiplexing OFDM signal.

Abstract translation: 一种方法包括调制光波以在第一偏振方向提供第一和第二OFDM信号边带，以及在第二极化方向上提供第一和第二OFDM信号边带，并且组合在每一个处与第一和第二OFDM信号边带相对地定位和连接的边带 偏振方向，以提供偏振复用OFDM信号。

公开(公告)号：US20110286746A1

公开(公告)日：2011-11-24

申请号：US12900220

申请日：2010-10-07

Applicant: Philip Nan Ji ,  Yoshiaki Aono ,  Jianjun Yu ,  Ting Wang ,  Tsutomu Tajima ,  Makoto Shibutani

Inventor： Philip Nan Ji ,  Yoshiaki Aono ,  Jianjun Yu ,  Ting Wang ,  Tsutomu Tajima ,  Makoto Shibutani

IPC: H04J14/02

CPC classification number: H04J14/0217 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0219

Abstract: A method for transponder optical channel selection of optical signals from a transponder aggregator includes choosing wavelength division multiplexing channels to be dropped from a transponder aggregator receiving optical input signals, splitting all dropped wavelength division multiplexing channels into at least one transponder having a coherent receiver and transmitter, and tuning a local oscillator laser of the coherent receiver to a wavelength of one of the all dropped wavelength division multiplexing channels for selecting one of the all dropped wavelength division multiplexing channels.

Abstract translation: 一种用于从应答器聚合器的光信号的应答器光信道选择的方法包括从接收光输入信号的转发器聚合器中选择要丢弃的波分复用信道，将所有丢弃的波分复用信道分解成具有相干接收机和发射机的至少一个应答器 ，并将相干接收机的本地振荡器激光器调谐到所有下降的波分复用信道中的一个的波长，以选择所有丢弃的波分复用信道之一。

公开(公告)号：US08064775B2

公开(公告)日：2011-11-22

申请号：US12183368

申请日：2008-07-31

Applicant: Jianjun Yu ,  Lei Xu ,  Philip Ji ,  Ting Wang ,  Dayou Qian ,  Yutaka Yano

Inventor： Jianjun Yu ,  Lei Xu ,  Philip Ji ,  Ting Wang ,  Dayou Qian ,  Yutaka Yano

IPC: H04B10/04 ,  H04B10/12

CPC classification number: H04B10/5165 ,  H04B10/54 ,  H04B10/548 ,  H04L27/2601

Abstract: A method includes generating at least two lightwave carriers from a lightwave source, the carriers having a wavelength spacing, creating an up-subchannel and a down-subchannel orthogonal to one another and spaced apart based on the fixed wavelength spacing from modulations of the lightwave carriers according to respective up-converted OFDM signals that are carrier suppressed, and combining one lightwave from the up-subchannel and one lightwave from the down-subchannel into an optical channel for transmission over an optical fiber.

Abstract translation: 一种方法包括从光波源产生至少两个光波载波，所述载波具有波长间隔，产生基于与光波载波调制的固定波长间隔彼此正交并且间隔开的向上子信道和下信道 根据载波抑制的各自的上变换的OFDM信号，并将来自上信道的一个光波和来自下信道的一个光波组合成光信道以在光纤上传输。

公开(公告)号：US20110075764A1

公开(公告)日：2011-03-31

申请号：US12841458

申请日：2010-07-22

Applicant: Shu-Hao Fan ,  Jianjun Yu

Inventor： Shu-Hao Fan ,  Jianjun Yu

IPC: H04L7/00 ,  H04L27/00

CPC classification number: H04L27/2657 ,  H04L27/2613 ,  H04L27/2675 ,  H04L27/2697 ,  H04L2027/003

Abstract: A method includes synchronizing a received signal with at least two orthogonal frequency division multiplexed OFDM training signals having only in-phase values and being real in the time domain and determining a frequency offset correction from the synchronization of the received signal and training symbols responsive to a cross-correlation between said training symbols to enable estimating all possible frequency offsets for correction for enabling OFDM demodulation of said received signal.

Abstract translation: 一种方法包括使接收的信号与仅具有同相位值的至少两个正交频分多路复用OFDM训练信号同步并且在时域中为实数，并且响应于一个接收信号和训练符号从接收信号的同步和训练符号确定频率偏移校正 所述训练符号之间的互相关，以便能够估计用于所述接收信号的OFDM解调的校正的所有可能的频率偏移。